Ethiopian State 2-6-0 Locomotives in Ethiopia
Class Details by Steve Llanso of Sweat House Media
Class Rhinoceros (Locobase 6812)
Data from the table presented on pages 416, 417 of the Groupe VI. - GTnie civil. - Moyens de transport. DeuxiFme partie. Classes 32 (Tome I), part of the series of Rapports du Jury Internationale of the Exposition Unverselle Internationale de 1900 Paris Exposition, hosted on the website of Le Conservatoire numTrique des Arts & MTtiers ([
], Accessed 21 August 2005).
This lightly loaded design (SLM works #1225) answered to a requirement to scale a 3% grade pulling 85 tonnes (including the tender) at 18-22 km/h (11-13.5 mph). The Jury report notes that the railway chose a Mogul arrangement because they needed only as much adhesion weight as three axles would bear on their light rail, but that spreading the weight over 4 axles gave them a stable and flexible engine. It was an oil-burner.
According to Jean-Pierre Crozet's Franco-Ethiopien Railway website listing, of the 4 locomotives ordered and constructed, the 1900 engines named Rhinoceros and Antilope were in fact delivered. The two from 1901 -- works numbers 1381-1382 -- were lost at sea. Several years later, SLM supplied 3 more locomotives, now equipped with superheaters; see Locobase 12598.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Rhinoceros |
| Locobase ID | 6812 |
| Railroad | Ethiopian State |
| Country | Ethiopia |
| Whyte | 2-6-0 |
| Number in Class | 2 |
| Road Numbers | 5-8 |
| Gauge | Metre |
| Number Built | 4 |
| Builder | SLM |
| Year | 1900 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 9.54 / 2.91 |
| Engine Wheelbase (ft / m) | 16.73 / 5.10 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.57 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 18,519 / 8400 |
| Weight on Drivers (lbs / kg) | 49,604 / 22,500 |
| Engine Weight (lbs / kg) | 59,525 / 27,000 |
| Tender Loaded Weight (lbs / kg) | 51,809 / 23,500 |
| Total Engine and Tender Weight (lbs / kg) | 111,334 / 50,500 |
| Tender Water Capacity (gals / ML) | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 660 / 2498 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 28 / 14 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 48 / 1219 |
| Boiler Pressure (psi / kPa) | 174 / 1200 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14.17" x 21.65" / 360x550 |
| Tractive Effort (lbs / kg) | 13,394 / 6075.42 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.70 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 142 - 1.772" / 45 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.50 / 3.20 |
| Firebox Area (sq ft / m2) | 68.86 / 6.40 |
| Grate Area (sq ft / m2) | 11.30 / 1.05 |
| Evaporative Heating Surface (sq ft / m2) | 758 / 70.45 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 758 / 70.45 |
| Evaporative Heating Surface/Cylinder Volume | 191.82 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1966 |
| Same as above plus superheater percentage | 1966 |
| Same as above but substitute firebox area for grate area | 11,982 |
| Power L1 | 3883 |
| Power MT | 517.73 |